Stove or heater



L. A. ALTHOFF STOVE OR-HEATER Filed Oct. 25, 1941 ATTORNEYS INVENTOR.

L ALTHOFF STOVE 0R HEATER Nov. 7, 1944.

Filed Oct. '25, 1941 2 Sheets-Sheet 2 I INVEN TOR. a. dZz/zofi ATTORNEYS.

Patented Nov. 7, 1944 UNITED STATES PATENT OFFICE 2,361,917. srovu' on HEATER Lawrence A. Althofi', Chicago, 111.

Application October 25, 1941, Serial No. 416,454

6 Claims.

This invention relates to a stove or heater and more particularly to a stove or heater equipped with improved means for withdrawing there from the gaseous combustion products.

In the operation of stoves and heaters containing e, plurality-of burners in a single com bustion chamber, difficulty has beenencountered in disposing of the gaseous combustion products. In the usual constructions of this typ which have heretofore been used, the burners are ar ranged s'ide-by-side, and a flue for withdrawing the gases communicates with the combustion chamber at one of the end or side walls thereof. The gases pass from the burners. to the flue and in so doing, the gases from one. or more or the; burners will usually pass over or about other burners, thus. interfering with the operation of the others burners by choking, or smothering them.

It is an object of the present invention to provide a stove or heater having a plurality of burners and; equipped with means for withdrawing the gaseous combustion products from each burner without permitting the same to pass through or over any of the other burners. Another object is to provide in a heater or stove a passage communicating with the outlet flue, the passage being arranged to conduct gases directly from each burner without passing over any of the other burners. Still another object is to provide passages arranged along the sides of the combustion chamber, each of the passages having an; outlet communicating with the hue and an inlet'openlng into the combustion cham-, ber between the central portions of the burners therein;

Another object of the invention is to construct a stove or heater having a combustion chamber and channel members within the chamber forming with the walls of the chamber outlet passages for conducting gaseous combustion products from each of a plurality of burners within the, chamber without passing the same through oryover any of; the other burners.

Other features and advantages will appear from the following specification and drawings,

in which:

In the specific embodiment of the invention described herein, the stove includes a casing. 10 formed from abase ll, end walls l2 and I3, side Walls l4, and a cover or top wall IS. The casing I0 is preferably rectangular in shape, and may be provided with side walls which are, slightly greater in length than the end walls. Any suitable casing, construction may, of course, be used, and. accordingly, this construction will not be described in detail herein.

The walls of the casing may be assembled in any convenient manner. Thus, as shown, the base II is provided with an upwardly turned flange l6, which engages a horizontal rib ll on the end wall l3,. Similarly, the cover or top wall 15 is, provided with a. depending lug I8, which engages the, end wall l2. The end walls, as. seen in Fig. 4, may be equipped with channels (9 and 2.0. extending vertically along the sides thereof and arranged to receive the side walls oi the casing, Suitable openings 2| may be provided in the channelled portion of the end walls to. permit, the. side walls tov be riveted orbolted thereto.

A frame cover 22 extends along the top of the side and endwalls oi the casing, and is adapted to. receive on the inwardly extending plates 23 a cover of any suitable type. The walls ll, l2, l3, l4 and I5 of the, casing l0 form a combustion chamber 24 within which are received the burners 2.5, and 26. The burners may be of any suitable and, conventional type, and as shown, may consist of oil burners having supports 21, bases 28, and body members 29.. Since the burner construction forms no. part of, the present invention, it will not be described in detail herein.

The burners, are preferably arranged in spaced relation. along the length of the combustion chamber 24, the burner 26 being adjacent the rear end wall. l3, and the burner 25 being adjacent the forward end wall. l2.

An, outlet flue, 30. for. receiving the gaseous combustion productsextends from the rear end of'the chamber 24 at. the upper portion thereof and through the collar 3-1 on the top frame, 22. A partition 33 extends, transversely acrossthe end of, the combustion chamber 24, adjacent the flue 3,0 and prevents direct communication between the flue and the combustion. chamber, the partition being equipped withavertical wall 3! and a horizontal flange, 35 at the bottomthereof. The partition may be secured. to. the casing by the bolts 3.6., or by any other suitable means As seen particularly inliig. 4; the partitionei is equipped at each. end. with an inwardly turned flange 31 and a lug 38, the flange and lug being spaced from each other to receive the vertical walls of channel members 39 and 4B. The channel members 39 and 49 include vertical walls 4| and 42, and outwardly turned flanges 43, 44, 45 and 46 at the upper and lower ends thereof. The bottom flanges 44 and 46 are in turn equipped with depending flanges 41 and 48, which are adapted to be secured to the side walls l4 of the casing In,

When the channel members 39 and 40 are secured to the side walls l4 of the casing ID with the ends of each member extending toward the rear portion of the combustion chamber 24, and being received between the lug 38 and flange 31, at each end of the partition 33, a pair of passages are formed along the side walls of the easing, which communicate with the opposite ends of the passage formed by the partition 33. The passage formed by the partition 33 in turn communicates with the flue 3t and in effect is so arranged that the fiue communicates with the combustion chamber 24 only through the passages formed. by the partition 33 and the channel members 39 and 40.

Preferably, the channel members 39 and 40 are of such a length as to extend from the rear end of the casing to approximately the center portion of each side thereof. The ends of the channel members which thus extend to the central portion of the casing provide inlet openings through which the gases may be received from the burners 25 and 26, and conducted to the flue 3!). The inlet openings, which, as shown, prefer- N ably are disposed approximately equidistantly E from the central vertical axis, or central portion, of each of the burners, are arranged on the opposite sides of the casing. The size and arrangement of the channel members, of course, may be varied or modified. Preferably, the channel members should extend forwardly at least to the central vertical axis of the rear burner, and should also have their inner ends disposed rearwardly of the central vertical axis of the forward burner.

In operation, the air is admitted to the combustion chamber 24 through the apertures 49 and 50 in the base H of the casing Ill. The air passes into the burners 25 and 26. From the burners 25 and 26, gaseous combustion products are emitted and are conducted, as shown by the arrows in Figs. 1 and 2, to the inlet openings at the ends of the channel members 39 and 40. From the inlet openings, the gases pass rearwardly along the passages formed between the channel members 39 and 40 and the adpacent side walls I4 of the casing [0, until they reach the transverse passage 5| formed by the partition 33 and the end wall l3 and flue 30. Since the passage 5l communicates with the flue 30, the gases are removed at the upper rear portion of the stove orheater. With this arrangement and construction, the gases which pass from each of the burners are conducted directly to the passages leading to the flue without passing through or over any of the other burners.

The burners are preferably arranged in spaced relation along the length of the combustion chamber with the flue at the upper portion of the rear end wall of the chamber, and the connecting passages extending along the side walls thereof. However, the arrangement may readily be changed and modified without departing from the invention, and although the longer walls of the casing have been referred to herein as the side walls, and the shorter walls as the end walls, any of the vertical walls of the casing may be considered as end walls, and the term is to be so construed as used in the claims herein.

The invention is adapted for use 'with cook stoves, radiant heaters, and other types of heaters in which a. plurality of burners are used. Although the invention has been illustrated in connection with a stove having a pair of burners, it is obvious that any desired number of burners may be used.

While in the foregoing specification, certain details of construction and arrangement have been set forth for the purpose of illustrating the invention, it will be understood that modifications and variations in the structure may be readily made by those skilled in the art without departing from the spirit of the invention.

I claim:

1. A stove or heater of the character set forth comprising a, casing providing a combustion chamber, a plurality of burners in said chamber, an outlet flue extending from the casing, and means forming a passage extending substantially horizontally along the upper portion of the casing and having an outlet communicating with the flue and an inlet communicating with the chamber, said inlet being disposed above said burners and between the respective central portions of the same and being in communication with said bumers through said chamber whereby gaseous combustion products from said burners pass from said chamber to said inlet and through said passage to the flue.

2. A stove or heater of the character set forth comprising a combustion chamber, a pair of burners spaced along the length of said casing, an outlet flue extending from the casing, and means forming at least one passage extending substantially horizontally along the upper portion and along the side of the chamber, said passage having an outlet communicating with the flue and an inlet communicating with the chamber, the inlet being disposed above and longitudinally between the central portions of the pair of burners and being in communication through said chamber with each of the burners, whereby ses from each burner are withdrawn from the chamber Without passing over the other burner.

3. A stove or heater of the character set forth comprising a casing providing a combustion chamber, a, pair of burners disposed in spaced relation along the length of the casing, an outlet flue extending from the upper rear portion of the casing, and a member along the side of the casing providing a passage extending substantially horizontally along the upper portion of the casing and having an. outlet communicating with the flue and an inlet communicating with the chamber, said inlet being disposed above and longitudinally between the central portions of the pair of burners and being in, communication through said chamber with each of said burners whereby gaseous combustion products from each of said burners pass through the chamber to the inlet and thenlaterally,through said passage directly to said flue.

4. A stove or heater of the character set forth comprising a casing providing a combustion chamber, a plurality of burners in said chamber, an outlet flue extending from one end of the casing, and a pair of members forming passages extending substantially horizontally along the opposite sides of the upper portion of the casing, each of the passages having an outlet communieating with the flue and an inlet communicating with the chamber whereby gaseous combustion products from the burners pass laterally through said passages directly to said flue, the inlet being disposed approximately equidistantly from the central portions of the front and rear burners and being in communication through said chamher with each of said burners.

5. A stove or heater of the character set forth comprising a casing providing bottom, top, end and side walls forming a combustion chamber, a pair of burners within said chamber, one of the burners being positioned adjacent the rear end wall of the chamber and the other burner being positioned adjacent the front end wall of the chamber, a pair of channel members secured respectively to the opposite side walls of the chamber at the upper rear portion thereof, each of the channel members forming with the adjacent side Wall a passag extending along the side of the chamber, said passage having an outlet at the rear end of the chamber and an inlet opening forwardly of the central portion of the rear burner, a member secured to the rear end wall of the chamber at the upper portion thereof and forming therewith a transverse passage communicating at its ends with the outlets of said first-mentioned passages, and a flue extending from the rear end of the casing and communicating within the chamber with only the transverse passage therein.

6. A stove or heater of the character set forth, comprising a casing providing a combustion chamber, a pair of burners within said chamber, one of said burners being positioned adjacent the rear wall of the chamber and the other burner being positioned adjacent the front wall of the chamber, a pair of channel members secured respectively to opposite side walls of the chamber at the upper rear portion thereof, each of the channel members forming with the adjacent side wall a passage extending along the side of the chamber, saidpassage having an outlet at the rear end of the chamber and an inlet opening 

